upstream: fatal() if getgrnam() cannot find "tty"

OpenBSD-Commit-ID: d148c1c052fa0ed7d105b5428b5c1bab91630048

1 files changed, 3 insertions, 1 deletions

diff --git a/sshpty.c b/sshpty.c
index a625e474e..9ad8e95c8 100644
--- a/sshpty.c
+++ b/sshpty.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: sshpty.c,v 1.33 2019/07/04 16:16:51 deraadt Exp $ */
+/* $OpenBSD: sshpty.c,v 1.34 2019/07/04 16:20:10 deraadt Exp $ */
 /*
  * Author: Tatu Ylonen <ylo@cs.hut.fi>
  * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
@@ -171,6 +171,8 @@ pty_setowner(struct passwd *pw, const char *tty)
 
         /* Determine the group to make the owner of the tty. */
         grp = getgrnam("tty");
+        if (grp == NULL)
+                fatal("no tty group");
         gid = (grp != NULL) ? grp->gr_gid : pw->pw_gid;
         mode = (grp != NULL) ? 0620 : 0600;